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Expose functionality

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Iron_E 2020-11-13 15:43:16 -05:00
parent c400ff4219
commit 59de085efc
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1 changed files with 24 additions and 18 deletions
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42
lua/highlite.lua
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@ -1,4 +1,5 @@
--[[ NOTHING INSIDE THIS FILE NEEDS TO BE EDITED BY THE USER. ]]
local highlite = {}
local vim = vim
-- Clear the highlighting.
@ -11,13 +12,13 @@ vim.g.indent_guides_auto_colors = 0
if vim.fn.exists('syntax_on') then vim.cmd('syntax reset') end
-- Determine which set of colors to use.
local using_hex_or_256 = tonumber(vim.o.t_Co) >= 256
highlite.using_hex_or_256 = tonumber(vim.o.t_Co) >= 256
or vim.o.termguicolors
or vim.fn.has('gui_running')
or string.find(vim.fn.expand('$TERM'), '256')
-- If we aren't using the hex and 256 colorset, then set the &t_Co variable to 16.
if not using_hex_or_256 then vim.o.t_Co = 16 end
if not highlite.using_hex_or_256 then vim.o.t_Co = 16 end
-- These are constants for the indexes in the colors that were defined before.
local PALETTE_ANSI = 3
@ -45,7 +46,7 @@ end --}}} ‡
--[[ If using hex and 256-bit colors, then populate the gui* and cterm* args.
If using 16-bit colors, just populate the cterm* args. ]]
local colorize = using_hex_or_256 and function(command, attributes) -- {{{ †
local colorize = highlite.using_hex_or_256 and function(command, attributes) -- {{{ †
command[#command + 1] =
' ctermbg='..get(attributes.bg, PALETTE_256)
..' ctermfg='..get(attributes.fg, PALETTE_256)
@ -60,7 +61,7 @@ end or function(command, attributes)
end --}}} ‡
-- This function appends `selected_attributes` to the end of `highlight_cmd`.
local stylize = using_hex_or_256 and function(command, style, color) -- {{{ †
local stylize = highlite.using_hex_or_256 and function(command, style, color) -- {{{ †
command[#command + 1] = ' cterm='..style..' gui='..style
if color then -- There is an undercurl color.
@ -71,7 +72,7 @@ end or function(command, style)
end --}}} ‡
-- Generate a `:highlight` command from a group and some attributes.
local function highlight(highlight_group, attributes) -- {{{ †
function highlite.highlight(highlight_group, attributes) -- {{{ †
-- The base highlight command
local highlight_cmd = {'hi! ', highlight_group}
@ -82,8 +83,7 @@ local function highlight(highlight_group, attributes) -- {{{ †
end
-- Determine if there is a highlight link, and if so, assign it.
local link = (type(attributes) == 'string' and attributes)
or attributes.link
local link = (type(attributes) == 'string') and attributes or attributes.link
if link then -- `highlight_group` is a link to another group.
highlight_cmd[3] = highlight_cmd[2]..' '
@ -104,17 +104,23 @@ local function highlight(highlight_group, attributes) -- {{{ †
vim.cmd(table.concat(highlight_cmd))
end --}}} ‡
return function(Normal, highlights, terminal_ansi_colors)
-- Highlight the baseline.
highlight('Normal', Normal)
-- Highlight everything else.
for highlight_group, attributes in pairs(highlights) do
highlight(highlight_group, attributes)
end
-- Set the terminal colors.
if using_hex_or_256 then for index, color in ipairs(terminal_ansi_colors) do
function highlite:highlight_terminal(terminal_ansi_colors)
if self.using_hex_or_256 then for index, color in ipairs(terminal_ansi_colors) do
vim.g['terminal_color_'..index] = vim.o.termguicolors and color[PALETTE_HEX] or color[PALETTE_256]
end end
end
return setmetatable(highlite, {
['__call'] = function(self, normal, highlights, terminal_ansi_colors)
-- Highlight the baseline.
self.highlight('Normal', normal)
-- Highlight everything else.
for highlight_group, attributes in pairs(highlights) do
self.highlight(highlight_group, attributes)
end
-- Set the terminal highlight colors.
self:highlight_terminal(terminal_ansi_colors)
end
})